code: def mode(self):
      if not hasattr(self, "_mode"):
          self.get_examples([0], None)
      return self._mode
  
file_path: chainer/chainer/dataset/tabular/_transform.py
imports: import six
  from chainer.dataset.tabular import tabular_dataset
label_desc: Use image node_id 4 for calling the _Transform obj's underlying member method code with example usage: obj.mode() and returns: self